9
Checking Jumper Settings
The following illustration shows the location of the mainboard jumpers. Pin 1 is
labeled.
Jumper Settings
Jumper
Type
Description
Setting (
default
)
JP1
3-pin
Clear CMOS
1-2: Normal
2-3: Clear
J P 1
1
JP3
2-pin
BIOS protection
Open: Disable
Short: Enable
J P 3
FID JP1
5-pin
CPU ratio selec-
tor
Refer to the table on the next page.
Jumper 1
– enables you to clear the BIOS. Follow these instructions:
1.
Turn the system off.
2.
Short pins 2 and 3 on JP1.
3.
Return the jumper to the normal setting.
4.
Turn the system on. The BIOS is returned to the d efault settings.
J u m p e r 3
– enables you to prevent the BIOS from being updated (flashed).
Set the jumper to disabled if you are going to update your BIOS. After updat-
ing the BIOS, return it to the default setting (enabled). For instructions on
updating the BIOS refer to Chapter 3.